gantry cranes are adapted to applications where overhead runways would be very long, costly to erect, and difficult to maintain in alignment. gantry cranes also allow the runway to be extended comparatively easy and inexp......gantry cranes are adapted to applications where overhead runways would be very long, costly to erect, and difficult to maintain in alignment. gantry cranes also allow the runway to be extended comparatively easy and inexpensive. where the installation is only temporary, a gantry crane can be moved to a new location more readily than an overhead crane and its runway.
